I'm currently on day 11 and have got all the perks for farming, plus i have a farm plot where each item will be 4x4 in blocks/seeds.
With all the perks, im getting 7 [iirc] items per farm block so enough to replant a seed and have a small excess. Obviously this only becomes a viable food source if you have a large enough plot of land with plenty of farm blocks but it's well worth it imo.
[I'll still prefer the old method of farming with a hoe but this isn't too bad i think]